<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .big {
        display: flex;
        width: 100%;
        height: 100px;
        background-color: pink;
        /* position: relative; */
      }
      .blue {
        background-color: blue;
        width: 300px;
        /* flex-grow: 1; */
        /* height: 100px; */
        /* position: absolute; */
      }

      .red {
        background-color: red;
        /* position: relative; */
        /* height: 100px; */
        /* width: 300px; */
        /* height: 100px; */
        flex-grow: 1;
      }
      .text span {
        background-image: linear-gradient(135deg, pink, skyblue);
        background-clip: text;
        /* -webkit-background-clip: text; */
        font-size: 60px;
        color: white;
      }
    </style>
  </head>
  <body>
    <div class="big">
      <div class="blue"></div>
      <div class="red"></div>
      <!-- <div class="yellow"></div> -->
    </div>
    <div class="text"><span>123456</span></div>
  </body>
</html>
